The standard covers several types of safety glazing, including:
At its heart, MS 81:2021 deals with the eradication of ambiguity. In the natural world, a bolt is just a piece of metal. In the world of engineering, a bolt is a calculated variable.
You can find the official document or its errata through the Manufacturers Standardization Society (MSS) or via the Accuris Standards Store . MSS SP-81 - Manufacturers Standardization Society